System · 1984–1987 · PC · MS-DOS 5.0
IBM Personal Computer AT (i286)
Incomplete
Components
No components found.
Memory
No memory found.
IBM Personal Computer AT
References
The IBM Personal Computer AT (model 5170, abbreviated as IBM AT or PC/AT) was released in 1984 as the fourth model in the IBM Personal Computer line, following the IBM PC XT and its IBM Portable PC variant. It was designed around the Intel 80286 microprocessor.
Operation System
- MS-DOS 5_0
MS-DOS 5.0 is somewhat lighter than 6.22. It introduced HIMEM/DOS=HIGH. With HIMEM.SYS plus DOS=HIGH in CONFIG.SYS, MS-DOS 5.0 leaves somewhere around 620–630 KB free instead of roughly 575 KB.